<html xmlns="http://www.w3.org/1999/xhtml" style="display: table">
<head>
<script type="text/javascript">

function boom()
{
  var tr = document.getElementById("tr");
  tr.contentEditable = "true";
  tr.focus();
  document.execCommand("selectAll", false, null);
}

</script>
</head>

<body onload="boom();"><tr id="tr"><td></td></tr></body>

</html>
